Well casing and strainer



April 16, 1929. 1 p LAWLOR ET AL 1,709,222

WELL CASING AND STRAINER Filed Jan. 15, 1926 l f//m/vfq dasffw F .RL raaf JH/zea Z' 65a/ APatented-Apr. 16, 1929.

UNITED STATES j PATENT oFFlcE- JOSEPH P. LAWLOR AND JAMES I. SEAY,OF MEMPHIS, TENNESSEE. i

WELL cnsING AND STRAINEB.

Application filed January 13, 1,926. Serial No. 80,984.

struction ofr'the individual units which go to makeup the monolithic structure.

There are at present in concrete well casings a number of inherent defects which it is the purpose of this construction to eliminate. The rings or sections in present construction if united at all, are united by cables or bolts, which ordinarily t loosely,

arc unprotected, and serve at best a tempo-- rary purpose, losing their entire value shortly, through rusting, and leaving the well casing and strainer made up only of loosely connected and poorly aligned units, which being easily displaced, often cause destruction of the well through allowing at rst minor infiltration of sand, thereby allowing y lateral lapse. 5

These designs also, provide only a minor amount of supporting area between sections,

and where the well is lof even usual depth often fail through crushing of these areas.

The objects of our invention are, First To provide strainer and well sections which are self centering and are place able without undue trouble.

Second z-To provide such sections having a largeamount of bearing surface.

, .'l`hird:-To provide means for securing the maximum advantage from the available bearing surface.

Fourth z-To provide simple and adequate means for joining Vthe sections together to form a monolithic well structure, and

yFifth :.-To protect thereinforcing means used against rusting.

We accomplish these objects as will be more fully. hereinafter set out in thedrawings, specifications and claims.

In the drawings: Fig. 1 is a half plan of one of the strainer sections. A l c Fig. 2 is amsectional elevation on the line II-II of Fig. 1 showing strainer and well casing sections assembled and joined in a monolithic assembly.

Referring now to the Adrawings in whlch .displacement and finally total col? the various parts are indicated by numerals. 1, 1 are well casing sections, each being an annular ring, preferably of concrete, having an annular male end 2 of less diameter than the body of the section, extending upward therefrom, and a corresponding and complementary annular female 'end 3 projecting downward. j

The exterior surface 4 of the male end is a truncated conical surface and the corresponding interior surface 5 of the female end is la similar truncated conical surface of. slightly flatter slope, whereby when the two surfaces are being engaged, the entering end ofthe male section will be of considerably less diameter than the opening in the female end ,which is to be lowered thereover and will thus readily be assembled.

The smaller diameter of these truncated sections is approximately the same so that when assembled they will fit closely land snugly, and correctly center the sections.

10 are strainer sections which are provided with a male end which is a similar annular ring, portions of which have been cut away to form channel-ways-lying between the supporting members 11, thel exterior surface of these members being a portion of a area than the adjacent sup orting members.`

The female end 12 of t ese strainer sections is substantially identical with the corresponding end of the solid sections having the same truncated conical interior surface, but, its depth is slightly less than the depth of the male sections and the lower end 13 is slightly bevelled, the upper surface 14 of the body portion of the section being oppositely bevelled, so that when adjacent sections are assembled the annular opening 15 formed will be smaller at the outer edge or periphery than adjacent the male portion thereof.

16 are vertical or longitudinal corrugations or channels in the outer portion of the strainer sections. These channels are preferably circular in cross section, and connected with the outer surface by V shaped slots having the apex of the V outward. No corrugations of course are needed or used in the well casing sections. y

In the assembled strainer andwell casing, 17, isa grout or mortar joint forming a bed 0r seat to adjust the bearing of each section grout filler. This grout filler bonds the rods" on that below and join them together, thus not only uniting the sections but equalizing the bearing.

Each of these sections is provided with a lurality of vertical holes 18, ordinarily our or six being used; in any eventvthe v`same number and spacing being used in all Y the sections, 19 are reinforcing rods, very considerably smaller than the holes and 20 a face of the supporting members is covered` with,l and the holes filled with, mortar and a second section lowered along the rods into `place, the conical shape of the male and female ends serving to perfectly align the sections. Mortar is then used as before and aul the procedure repeated. s Whenfthe end of,

one of the rods is reached a new length of rod is forced into the soft mortar such depth so as to give' the desired lap of the rods andl additional sections are placed until lthe desired strainerA lengthjs reached, 'after which well casing sections instead of strainer sections are used.

lreferably in this Work a quick setting `cement is used so that the joints may harden before. strain is placed on them.

It 'will readily be understood that when thus assembled and joined together the well casing and strainer become one monolithic structure.l

The well casing sections are shown as of the same length as the strainer section but this is notnecessary, and preferably they are much longer.

It will also be understood, in a monolithic structure, that while the unit types shown are preferred, other unit forms may besubof self-aligning Ahaving an unlnterrupted annular bottom lstituted if desired, and that while the structure is designed primarily with concrete as a is claimed is i l. A well strainer, comprising a plurality unit sections, each section surface, and an annulamtop surface engaging with andv supporting the annular bottom surface of a superposed section, said annular top surface being interrupted at intervals by water' channels, a mortar joint bedding said one material. f Having thusdisclosed o' r mvention, whatV engaging surfaces, said .sections havlng a `l plurality of holes through said engaging surfaces in alignment with corresponding holes in adjacent section, reinforcing rods in said holes, -and mortar surrounding said rods and filling said holes to anchor" said'rods to said sections and tie the same together into a monolithic unit comprising metal-reinforced mortar construction. i,

2. A well Istrainer,.comp'rising a plurality of self aligning unit sections, each section having an annular bottom surface, and an annular top surface engaging and supporting the annular bottom surface of 'a superposed section, 'one only of said surfaces bein interrupted 'at intervals' by water channe s, a mortar joint bedding said engaging surfaces, said sections having a plurality of holes through said engagingI surfaces in alignment with corresponding holes in adjacent sections, reinforcing rods in said holes,

' and mortar surrounding said rods and'fllling said holes to anchor said rods to said sections 'and tie same together into a monolithic, metal-reinforced unit.-

In `testimony whereof .we have hereuntol set our names.

JOSEPH P. LAWLOR. JAMES p I. SEAY. 

